121230542633 has 2 divisors, whose sum is σ = 121230542634. Its totient is φ = 121230542632.

The previous prime is 121230542597. The next prime is 121230542639. The reversal of 121230542633 is 336245032121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112273245184 + 8957297449 = 335072^2 + 94643^2 .

It is an emirp because it is prime and its reverse (336245032121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121230542633 - 2¹² = 121230538537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121230542633.

It is not a weakly prime, because it can be changed into another prime (121230542639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60615271316 + 60615271317.

It is an arithmetic number, because the mean of its divisors is an integer number (60615271317).

Almost surely, 2^121230542633 is an apocalyptic number.

It is an amenable number.

121230542633 is a deficient number, since it is larger than the sum of its proper divisors (1).

121230542633 is an equidigital number, since it uses as much as digits as its factorization.

121230542633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 121230542633 its reverse (336245032121), we get a palindrome (457475574754).

The spelling of 121230542633 in words is "one hundred twenty-one billion, two hundred thirty million, five hundred forty-two thousand, six hundred thirty-three".